Pump



6.1. NOEL.

Illl| INVENTOR. CLARENCE J. NOEL.

ATTORNEYS.

c. 1. NOEL.

PUMP.

APPLICATION FILED MAY 19. 1921.

l 9435,54?? Patented Nov. M, 1922..

z sums-sum 2. FZ7/d6.,

INI/ENTOR. CMR/:NGE J. NOEL A TTORNE YS.

l?atezmtecll` Nov,a 14, 1922; I

UNH@ TATS 1,435,547 encreur cerros,

CLARENCE J'. NOEL, 0F ORANGE COVE, CALIFORNIA.

'Application led IirIay 19,

To all lwhom t may concern:

ABe it known that I, CLARENCE J. NOEL, a citizen of the United States, and resident of Orange Cove, county of Fresno, and State -of California, have invented a new and useof which the following isa speci# ful Pump, ication.

The present invention relates to improvements 1n pumps and more particularly in pump head arrangements to' be used iii connection with double plunger pumps, in which two plungers work in the samev cylinder oneab'ove the other, in opposite direction. To get a continuous flow of liquid in pumps of this type, it is desirable to arrange the mechanism actuating the plungers in such a manner that the strokes of the plungers overlap, that is, that the upward stroke of one plunger begins before the upward stroke of the other plunger ceases; .In my' mechanism I provide a pump head and actuating means for the plungerythat will accomplish this object. My device'being so constructed that the plungers are acted on by rocking beams in which the points supporting the plungers do not reciprocate vertically but along a circular curve. I also provide means in myA mechanism to convert this curve-like motion of the supporting points into a vertical motion before they actuate the plungers. I attain these objects by means of the .mechanism illustrated in the accompanying drawing in whichrFfigure 1 represents an end view of my puinp head, Figure 2 a side view of the same, Figure 3 a plan view, and Figure`s`^4 and 5 graphic illustrations o f the operation of the pump head. j

Referring to the drawing in detail, the base plate (1) of my pump head (2) is supported over the well in such a-manner that the T (3) having the discharge (4) therein, is positioned vertically overthewell.

The cap v (6) of the 'l' has two perforations (7) and (8) through which, secured in proper stuiiing boxes (9), extend two rods (11) and (l2), carrying at their lower ends the plungers, not shown in the drawing. The problem I solve inthe present invention is, to impart vertical reciprocating motion in opposite direction to these two plunger rods in such a manner that each upward stroke of one rod overlaps the upward stroke of the other rod.

The base plate supports a frame (14) comprising two similar longitudinal side inembers (16) and suitable connecting trans- 1921. Serial No. 470,747.

verse members acting as -braces or struts for the side members. frame, that is, the part next to' the plunger rods, is taller than the rear part and carries a transverse shaft (17) on which the central parts of two walking beams (18) and (19) are pivotally supported. The front ends of the beams are pivotally connected to the links (20) by the pins (2l), the other ends of the links engaging the plunger rods as shown at (15), while the rear ends of the beams are worked by the connecting rods 22) one end of which is pivotally secured to said walking beams, as shown at (23), while the other ends are pivotally secured to the crank pins (.24) positioned at the ends of twoarms (26) extending from the crank shaft (27 in opposite direction.A The crank shaft is rotated by the gear wheel (28) mounted on the same and adapted to be engaged by the pinion (29) secured to the shaft (31). Rotary'. motion is transmitted to the latter shaft by any suitable power actuating the pulley (32).

lTo obtain fron'if "this arrangement the proper overlappingstrokes 'of the plunger. rods, two rules should be observed. Firstly, the `forward arm of the walking beams should be bent upwardly so that, when the rear arm is horizontal, the working centerl of the forward arm (ife. pin 21)' is above the pivoting center of the walking beams by one half the total stroke of the plungerv rod, and secondly, the centerN of the crank shaft (27) should be forward of the working center of the rear armof the beam when the latter is in its horizontal osition by about one-fourth the maximum t row of the crank shaft. I

The manner in which overlapping reciprocating motion is transmittedto the plunger rods by this arrangement, 1s graphically illustrated in Figure 4, in which the large circle represents the path of the yworking centers (21) and (23) of the walking beams, while the smaller circle represents the path of the crank pin (24) The smaller clrcle 1s divided into twelve equal parts, designated a, b, c, etc. It will be seen that in this-circle the letter g designates the polnt diametrically opposite to a. On the larger circle, above (23), are indicated, by corresponding letters, the various positions occupied by the pin 23 while 24 travels along the circle b, c, etc., which represents the downward stroke of the plunger rod. YIt will be seen that 23 travels upward on the large circle as (24) travels on the smaller circle, first slowly,

then increasing in speed, reaching its highestv not begin its downward stroke until the point a has been passed. By this arrangement each upward stroke overlaps the upward stroke of the other plunger and takes over its load before the other -plunger lets go 'of it.

The reciprocatin motion thus imparted to the pin (21 runs a ong the curve of a circle and, to ren er the device more ei'ective, it 1s vnecessamryfto change this curved motion into a straight vertical motion, before it 1s transmitted to the plunger rodf This change I attain by subjecting the link (20) connecting the pin (21)'with the plunger rod to `the action of the toggle (36) which is substantially twice as long as the forward arm of the walk ing beam, all distances being counted from center to center, is pivotally secured( in the frame at (38), a point, the vertical distance of whichfrom the center -of the" walking vbeam is equal to one-half the length of the connecting link, center to center, while itsI horizontal distance from said center, is equal to one-half of its`own length, The length of the arms of the crank shaft should be so proportioned that the stroke of the plunger does ynot'exceed 85% of the mgth of the forward arm ofthe walking eam. f

In Figure 5 is shown'a graphic illustra-v tion showing the operation of the toggle. The top position, is shown in full lines. The vertical distancexbetween the center points (17) and (38) being'ecgual to onealf the length of the link (2O it will be seen that when the forward arm of the beam is in a horizontal position, thertoggle will also be horizontal. Since the toggle is twice as lon as the forward 'arm and the horizontal dlstance between (17) and (38) is equal to one-half the length of the toggle, the point (17) must be perpendicularly over the` center of the toggle, as indicated by the dotted line, and the point (21) perpendicularly over, the point (15), that is, the connecting link is then in a vertical position. In this position it is stra-i ht over the center of the plunger rod. W len arm (18) is rocked upwardly, its `tendency to pull the plunger rod sideways is -counteracted by the tog le and since the latter is twice aslong ast e arm (18)/and tlie circle driving meansA Jfor rockin described by its supporting point twiceas large as the `circle described by the point (21) of the arm of the walking beam, it

will cause the point (15) to move fverti cally in a substantially straight line. In the same way in rocking downward will the toggle secure a straight vertical path for' the pivot I claim: 1. In a pu'mp, in means for securing for a reciprocating plunger an' advanced working stroke, alframe, a bent walking beam presenting a rear arm disposed horizontally (15) actuatmg the plunger.

when in one extreme position and a slanting front arm pivotally mounted in the frame, an operative connection between the front arm and theV plunger, and rotary driving means for rocking the horizontal arm in a vertical plane substantially limited by the horizontal plane of the beam pivot disposed at a horizontal distance from the end of the horizontal arm by substantially onefourth of its maximum throw.

2. In a pump, in means for securing for two plungers working in combination an overlapping workin stroke, a frame, two symmetric walking a rear armJ disposed horizontally. when in one extreme position and a slantin front arm pivotally and co-axially mounte indthe frame, operative connection between the front arms and the plungers, and rotary the horizontal arms in opposite direction 1n vertical planes substantially limited by the horizontal plane of the beam pivot disposed at a horizontal distance from the ends of the horizontal arms b substantially one-fourth of its maximum t row.r

3. In a pump, -in means f or securing for a reciprocating plunger an' advanced workingv stroke,-a frame, a bent walking beam presenting a4 rear larm disposed horizontally when in one extreme position and a slanting vfront arm pivotally mounted in the frame,

a connecting link between the front arm and the plunger, rotar driving means for rocking the horizonta arm in a vertical plane substantially limited by the horizontal plane of the beam pivot disposed at a horizontal eams each presenting distance from the end of the horizontal arm by substantially one-fourth of its maximum throw and a toggle mounted in the frame engaging the connecting link for imparting strai ht vertical motion to its lower end.-

4. na pump, in means for securing for a reciprocating plunger an advanced working stroke, a frame, a bent walking beam presenting a rear arm disposed' horizontally when in one extreme position and a slanting front Yarm pivotally mounted in the frame, a connecting link between the front arm and the, lunger, rotary driving means for rocking the horizontal arm in a vertical plane substantially limited by the horizontal plane the beam pivot tlisposerl at a horizontal distance from .the eni of the hori zontal arm by substantially one-fourth of itsmaximum throw anal a toggle monntecl in the frame engaging the connectin link for imparting straight vertical motion to its lower end having substantially twice the length oi the front arm.

v 5,l a pump, in means for securing ior a reciprocating plunger an aclvanced working stroke, a trame, a bent walking beam presenting a rear arm disposed horizontally when in one extreme position an'cla slanting "liront arm pivotally mounted in the trame, a' connecting link between the front arm and the plunging, rotary driving means for rocking the horizontal arm in a vertical plane snlostantiallylimited by the horizontal plane of the beam pivot disposed at a horizontal 'distance Jtroni the enfl of the horizontal arm by substantially one-fourth of its maximum throw anoll a toggle mounted in the rame engaging the connecting'link iler imparting straight vertical motion to its lower enel having substantiall` twice the len the liront arm anti asino secured e 9 A e at a @ein substantially clistant vertically by one-half the length beam center of the connecting link and horizontallyv by a connecting linkbetween the `iront arm' ancl the plunger, rotaryl clriving means for rockin the horizontal arm in a vertical plane su stantially limited by the horizontal plane of the beam pivot disposed at a horizontal, distance from the end of the horizontal arm by substantially one-fourth of its maximum throw and a toggle mounted in the :trame engaging the connecting link for imparting f straight vertical motion to its lower enel, the torquevarm 'of the rotary means being so 'proportioned .that the plunger stroke does not exceeol 855 of the length of the front beam armc @LARTSCE El. if? 

